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scroll-snap-align

The scroll-snap-align property specifies the box's snap position as an alignment of its snap area (as the alignment subject) within its snap container's snapport (as the alignment container). The two values specify the snapping alignment in the block axis and inline axis, respectively. If only one value is specified, the second value defaults to the same value.

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Syntax

/* Keyword values */
scroll-snap-align: none;
scroll-snap-align: start end; /* when two values set first is block, second inline */
scroll-snap-align: center;

/* Global values */
scroll-snap-align: inherit;
scroll-snap-align: initial;
scroll-snap-align: revert;
scroll-snap-align: revert-layer;
scroll-snap-align: unset;

Values

none: The box does not define a snap position in that axis.
start: The start alignment of this box's scroll snap area, within the scroll container's snapport is a snap position in this axis.
end: The end alignment of this box's scroll snap area, within the scroll container's snapport is a snap position in this axis.
center: The center alignment of this box's scroll snap area, within the scroll container's snapport is a snap position in this axis.

Safari had the two value syntax in the wrong order, the first value being inline the second block. See bug #191865.

Formal definition

Initial value	`none`
Applies to	all elements
Inherited	no
Computed value	as specified
Animation type	discrete

Formal syntax

scroll-snap-align = 
  [ none | start | end | center ]{1,2}

Specifications

Specification
CSS Scroll Snap Module Level 1 # scroll-snap-align

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`scroll-snap-align`	69	79	68	No	56	11	69	69	68	48	11	10.0